421243332 has 24 divisors (see below), whose sum is σ = 983235456. Its totient is φ = 140366688.

The previous prime is 421243331. The next prime is 421243337. The reversal of 421243332 is 233342124.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (421243331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59493 + ... + 66195.

It is an arithmetic number, because the mean of its divisors is an integer number (40968144).

Almost surely, 2^421243332 is an apocalyptic number.

It is an amenable number.

421243332 is an abundant number, since it is smaller than the sum of its proper divisors (561992124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421243332 is a wasteful number, since it uses less digits than its factorization.

421243332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11947 (or 11945 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 421243332 is about 20524.2133101369. The cubic root of 421243332 is about 749.6254912443.

Adding to 421243332 its reverse (233342124), we get a palindrome (654585456).

The spelling of 421243332 in words is "four hundred twenty-one million, two hundred forty-three thousand, three hundred thirty-two".